What is the significance of China's launch of Gaogao 7
At 11:22 on November 3, China successfully launched gaogao-7, a major special satellite of high-resolution earth observation system, with a long march 4B carrier rocket at Taiyuan Satellite Launch Center, and carried and launched three satellites, including Gaogao test satellite, Sudan scientific experiment satellite 1 and Tianyi 15. As China's first civil sub meter optical transmission three-dimensional surveying and mapping satellite, gaogao-7 satellite will play an important role in land surveying and mapping, urban and rural construction, statistical investigation and so on.
The reporter learned from the National Space Administration that at 11:22 on November 3, China successfully launched Gaogao 7, a major special satellite of the high-resolution earth observation system, with a long march 4B carrier rocket at the Taiyuan Satellite Launch Center, and carried and launched three satellites, including Gaogao test satellite, Sudan scientific experiment satellite 1 and Tianyi 15. As China's first civil sub meter optical transmission three-dimensional surveying and mapping satellite, gaogao-7 satellite will play an important role in land surveying and mapping, urban and rural construction, statistical investigation and so on.
Gaogao-7 satellite is a scientific research satellite with the highest mapping accuracy among Gaogao series satellites. It is equipped with payloads such as dual line array stereo camera and laser altimeter, breaks through the sub meter stereo mapping camera technology, and can obtain high spatial resolution optical stereo observation data and high-precision laser altimetry data, It not only has the advantages of front and rear stereoscopic imaging ability in the same orbit and sub meter spatial resolution, but also can greatly improve the elevation accuracy of optical stereoscopic images under uncontrolled conditions by using the high-precision elevation information obtained by laser altimeter, so as to realize China's civil 1:10000 scale satellite stereoscopic mapping, which can meet the needs of users in basic surveying and mapping, global geographic information support, and statistics The demand for high-precision three-dimensional surveying and mapping data in urban and rural construction monitoring and evaluation, agricultural investigation and statistics, improve the level of Surveying and Mapping Satellite Engineering in China, and improve the self-sufficiency rate of high-resolution three-dimensional surveying and mapping image data in China.
The high score project is one of the 16 major projects determined in the outline of the national medium and long term science and technology development plan (2006-2020). The goal is to build a high-resolution earth data acquisition system based on satellites, Stratospheric Airships and aircraft, improve the corresponding receiving, processing and application systems, and combine with other observation means to form an all-weather, all-time Earth observation capability for global coverage.
Since the launch and implementation of the special project, many satellites have been successfully launched, such as Gaogao 1, Gaogao 2 sub meter panchromatic, Gaogao 3 1m radar, Gaogao 4 synchronous gaze, Gaogao 5 hyperspectral observation, Gaogao 6 land emergency monitoring, and Gaogao data have been widely used. In the follow-up, the high score special project will further focus on application, and build an advanced land, atmospheric and marine earth observation system by 2020 to provide services for modern agriculture, disaster prevention and reduction, resources and environment, public security and other fields, and promote the formation of a spatial information industry chain.
The main user departments of gaogao-7 satellite are the Ministry of natural resources, the Ministry of housing and urban rural development and the National Bureau of statistics. The Gaogao 7 satellite and the long march 4B carrier rocket were developed by the China Institute of space technology and the Shanghai Institute of space technology, affiliated to China Aerospace Science and Technology Corporation.